Asynchronous multiple data sends in single message

[karthi8185]

Hi,

As per the below example. Can i say the two data (heapAlloc, gcCount) transmitted in a single message to Otel Collector?
Kindly confirm how the data transfer processing happening in otel API.

package main

import (
"context"
"fmt"
"runtime"

"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/metric"

)

func main() {
meter := otel.Meter("go.opentelemetry.io/otel/metric#MultiAsyncExample")

// This is just a sample of memory stats to record from the Memstats
heapAlloc, _ := meter.Int64ObservableUpDownCounter("heapAllocs")
gcCount, _ := meter.Int64ObservableCounter("gcCount")

_, err := meter.RegisterCallback(
	func(_ context.Context, o metric.Observer) error {
		memStats := &runtime.MemStats{}
		// This call does work
		runtime.ReadMemStats(memStats)

		o.ObserveInt64(heapAlloc, int64(memStats.HeapAlloc))
		o.ObserveInt64(gcCount, int64(memStats.NumGC))

		return nil
	},
	heapAlloc,
	gcCount,
)
if err != nil {
	fmt.Println("Failed to register callback")
	panic(err)
}

}

[pellared]

Can i say the two data (heapAlloc, gcCount) transmitted in a single message to Otel Collector?

In general (unless you have not done anything strange) yes. But you have not shared the code how you setup the OTLP exporter and meter provider.

[karthi8185]

yes, i created the OTLP exporter and meter provider.

[karthi8185]

Thanks @pellared, So it helps to send multiple data in a single message at a time